Sharpener



J. M. RQBERYS.

SHARPENER.

APPLICATRDN FILED MAY 10' l9l9 1,335,603. Patented Mar. 30, 1920.

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JAMES M. ROBERTS. OF RICES LANDING, PENNSYLVANIA.

SHARPENER.

Specification of Letters Patent.

Patented Mar. 30. 1920.

Application filed May 10, 1919. Serial No. 296,102..

ing means wherehy either side of the cutting edge may he sharpened at different angles.

Another ohjeet of the invention is to provide a sharpener of this eharaeter, in which the sharpening rylinders are eomposed of a series of rotatahly suunorted disks spared apart. so that the disk of one cylinder overlaps the disk ol' the other. so that a greater sharpening surtaee is obtained.

still further ohjeet of the invention is to provide a rheap. simple and effective. struetnre. wherehy the heretofore mentioned ohjeets may he rarried out. as hereinafter more fully set. forth.

in the aeeompanving drawings:

Figure l is a wrspeetive view of my improved sharpener:

l ig. L. is a longitudinal vertieal iew: and

Fig. 3 is a horizontal sertional view taken on the lin 3 3 of Fig. 2.

Referring now to the drawings. 1 represents the hase of my improved sharpener, \vhieh. as shown. is of reetnngnlar form and earries on its upper i'aee the upwardly extending housing 2. \vhieh is integral with th hose. 'lhe hase is provided with openings 3. wherelrv the same may he serewed upon a tahle. or other support 7). hy means of si'ifWS l. as shown in Fig. 2 of thedrawings.

The housing .2 is of a reetangular form; slightly smaller than the base lrand has its side walls provided with upwardly eurved portions {1 and T. having openings 8 and 9. in whirl! are two holts Ill and ll whirli ext nd :u'ross the homing. and upon whieh are mounted the sharpening evlinders. as will now he deserila-d.

The sharpening rylinders are l'orined of a series of disks 1:. and. as shown, are com-- p.-iratively thin with straight outer edges 15! and provided with openings [4' lo roeeive sectional the bolts 10 and 11. .\ny number of cutting disks may he used. and between each disk is 'asher 14, the. diameter of which is consideruhl less than that oi the sharpening disk. he washers. like the disks, are provided with openings through whieh the bolts pass and there are sufficient disks and washers on each holt to nearly [ill the space between the sides of the housing 2. so that there is a sli ht longitudinal movement of the cutting cl isks on the bolts. The bolts are so positioned in the housing and the. washers and entting disks on one holt are so positioned that they pass hotween the sharaening disk earried by the other bolt, as 0 early shown in Figs. 2 and 3 of the drawings.

in the ordinary sharpening of a knife, and when it is desired to sharpen both sides, it is placed hetween the two sets of sharpening disks and drawn transversely of the housing, so that the sharp edges of the disk engage both sides of the knife and sharpen the same.

The housing 2 has its ends and 16 extending upwardly a eonsiderahle distance to form the guides for sharpening one side of the cutting edge of a knife. scissors, or other implements. The end 15. as shown, is

thirkened or drawn inwardly, as indicated.

at 17. above the sharpening r-ylinder, so that a knife or scissors hlade placed against the inner face thereof. and drawn transversely of the housing will he. sharpenml. The end 16 is thickened. or drawn inwardly, as indicated at 18. to a greater extent than the end 17 so that itsinner fare is closer to the top of the disk. and whereby the point of eontaot of the knife is at a less angle when held against the end 16 than when held against the. end 15.

lly this arrangement. applicant has produeed a sharpener in whieh the proper hevel ean he given to the eutting edges of different implements on either side. by drawing the,

tool aeross the same from dill'erent sides.

While I have shown the base, housing and guides made integral of metal. it will he understood that the same eould he made of an material and huilt up of seetions. in any desired manner.

llaving thus deserihed my invention, What l ,elaim as new and desire to set-are hy Letters Patent. is:

"1. sharpener emnprismg a. support, a pair of eireular overlapping sharpening n'ie'mbers rotatably suarLorted therein, and

vertical guides carrie the ends of the support at points outwar from the axes of thesharpenmg members whereby both edges or gither edge of the tool can be sharpened by a single operation.

2. A sharpener com rising a support, a pair of circular cy indri'cal sharpenin members rotatably supported thereln an formed of spaced overla ping disks and vertically upwardly exten mg guides carried by the ends 'of. the support at points outward. from the axes of the'sharpening mbers whereby both ed es or either edge of he tool can be sharpene by a sin le operation.

housing, a pair of para lel cy indrical sharpening members rotatably supported therein, upwardl extending guides carried by the ends of t e housing and extending upwardly beyond the periphery of the cylindrical sharpening members, whereby either edge of the instrument may be sharpened.

4. A sharpener comprising a support, a pair of parallel 'cylindric'a'l sharpening members therein. li'ljltt'itrdly extending guides carried by the ends of the su port and drawn inwardly over the cylini rical sharpening members, one guide extending a greater distance over the sharpenin memher than the other guide, whereby iiferent bevels will be given implements held against the two guides.

In testimony whereof I aflix my signature in the presence of two witnesses. 3. A sharpener eomprisin a rectangular JAMES M. ROBERTS.

Witnesses W. G. SHARPNAUK, W. B. GUESNNAN. 

